The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jan. 16, 2001

Filed:

Sep. 24, 1998
Applicant:
Inventor:

Shouji Fujino, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F 5/06 ;
U.S. Cl.
CPC ...
G01F 5/06 ;
Abstract

In the method and apparatus, a light receiving element,is prevented from being exposed to the direct light of the sun so that a signal is transmitted by means of infrared rays in a favorable and steady manner. a transmitter,carried by a driver emits the infrared rays,toward a floor surface of the vehicle. The light receiving element,is oppositely disposed from such floor surface to receive a reflected component of the infrared rays,. The apparatus comprises: the transmitter,, which is carried by the driver and provided with a light emitting element,for emitting the infrared rays,toward the floor surface; and, a receiver,installed in a front panel of the vehicle, in which receiver,the light receiving element,is mounted.


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